"So I tried my best, that's all. I have no qualification. So this is very nice point, yasya prasādāt. We have to try our best to... I may not be able to do that, but that endeavor will be appreciated by Kṛṣṇa and the spiritual master. That is required. I may be most incompetent. Everyone is incompetent. Who can satisfy Kṛṣṇa, this unlimited? But simply what Kṛṣṇa says, if we do, that will satisfy Him. Kṛṣṇa says, man-manā bhava mad-bhakto mad-yājī māṁ namaskuru (BG 18.65). The guidance is, the spiritual master, he orders that man-manāḥ, 'Always think of Me,' bhava mad-bhaktaḥ, 'just become My devotee, worship Me, and offer your obeisances unto Me.' And here is the Deity. So that is our business. Think of always, 'Here is Rādhā and Kṛṣṇa, here is Jagannātha, here is Lord Caitanya.' What is the difficulty?"
(Srila Prabhupada Lecture, Tokyo, January 30, 1974)